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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2017-11-20 12:34:55 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2017-11-20 14:49:16 +0000 |
| commit | e40dd226246d2a0fb463a04bd4c6f1b9e0a650ed (patch) | |
| tree | 83311e0dc5b71ebb4c75bc03dee2ff37b9538d38 /drivers/gpu/drm/i915/intel_lrc.c | |
| parent | 675f7ff35bd256e65d3d0f52718d8babf5d1002a (diff) | |
| download | op-kernel-dev-e40dd226246d2a0fb463a04bd4c6f1b9e0a650ed.zip op-kernel-dev-e40dd226246d2a0fb463a04bd4c6f1b9e0a650ed.tar.gz | |
drm/i915/execlists: Listen to COMPLETE context event not ACTIVE_IDLE
Since commit e1fee72c2ea2e9c0c6e6743d32a6832f21337d6c
Author: Oscar Mateo <oscar.mateo@intel.com>
Date: Thu Jul 24 17:04:40 2014 +0100
drm/i915/bdw: Avoid non-lite-restore preemptions
execlists has listened to (ACTIVE_IDLE | ELEMENT_SWITCH) for detecting
when one context completed and it either continued onto the next (in port
1) or idled. We would always see COMPLETE | ACTIVE_IDLE on the final
context-switch event, but on recent gen it appears that we now get
separate ACTIVE_IDLE and COMPLETE events. In particular, the ACTIVE_IDLE
events may not be coupled to a context (since it is a general state rather
than a specific context completion event).
v2: Update the history, execlists did originally start out by listening
to the COMPLETE event not ACTIVE_IDLE.
v3: Update preempt completion test to also use COMPLETE not ACTIVE_IDLE.
References: bspec/12255
References: https://bugs.freedesktop.org/show_bug.cgi?id=103800
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Oscar Mateo <oscar.mateo@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Michal Winiarski <michal.winiarski@intel.com>
Cc: Michel Thierry <michel.thierry@intel.com>
Acked-by: Michel Thierry <michel.thierry@intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171120123458.23242-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/intel_lrc.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_lrc.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index be6c39a..c2cfdfd 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -154,7 +154,7 @@ #define GEN8_CTX_STATUS_LITE_RESTORE (1 << 15) #define GEN8_CTX_STATUS_COMPLETED_MASK \ - (GEN8_CTX_STATUS_ACTIVE_IDLE | \ + (GEN8_CTX_STATUS_COMPLETE | \ GEN8_CTX_STATUS_PREEMPTED | \ GEN8_CTX_STATUS_ELEMENT_SWITCH) @@ -876,7 +876,7 @@ static void execlists_submission_tasklet(unsigned long data) if (!(status & GEN8_CTX_STATUS_COMPLETED_MASK)) continue; - if (status & GEN8_CTX_STATUS_ACTIVE_IDLE && + if (status & GEN8_CTX_STATUS_COMPLETE && buf[2*head + 1] == PREEMPT_ID) { execlists_cancel_port_requests(execlists); execlists_unwind_incomplete_requests(execlists); |
